Astronomic time relays from Entes are developed to control relay contacts by sunrise/sunset, real–time or with photoelectric sensors. These relays contain Li-ion battery with a 5 year life cycle. They contain a super capacitor, giving them up to 10 hours reserve time, keeping the memory stored in case of power failure. DTR series have 2 C/O output contacts with 8A relays and 1 C/O output contact with 16A relay in option. 18 different programs can be assigned to these contacts making them suited for Outdoor lighting, Indoor lighting, Irrigation systems, ATM lighting and for any 7/24 application.